- Companies
- Civil engineering
- Doncaster
- Sustain Energy Consulting Limited
Sustain Energy Consulting Limited
- Company number
- 11942624
- Incorporated
- 12 Apr 20197 years trading
- Registered office
- 33 Thorne Road, Doncaster, DN1 2HD
- Nature of business
- Construction of utility projects for electricity and telecommunications
Sustain Energy Consulting Limited is a 7-year-old private limited company registered in Doncaster, company number 11942624, one of 170 civil engineering contractors in Doncaster. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £14K (+28.3%) on the year before, to £62K.
- Net assets rose in 3 of 6 year-on-year comparisons on record.
- Current assets of £44K against £46K owed within a year: 0.9 times cover.
- 2 employees on average, up from 0 the year before.
- Balance sheets on record for 7 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £62K | £9,778 | £44K | £46K | 2 |
| 31 Mar 2025 | £48K | £19K | £73K | £26K | 0 |
| 31 Mar 2024 | £2,691 | £2,690 | £0 | 0 | |
| 31 Mar 2023 | £3,774 | £3,774 | £0 | 0 | |
| 31 Mar 2022 | £4,793 | £5,556 | £763 | 0 | |
| 31 Mar 2021 | £23K | £23K | £10K | 1 | |
| 31 Mar 2020 | £15K | £3,237 | £21K | 1 |
Who runs and owns Sustain Energy Consulting Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officer
| Name | Role | Appointed |
|---|---|---|
| N*** H*** | Director | Apr 2019 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| D*** G*** | Secretary | Apr 2019 | May 2024 |
Person with significant control
Where Sustain Energy Consulting Limited is registered
The registered office is in Doncaster (DN1), in the Doncaster local authority area, Yorkshire and The Humber. Show DN1 2HD on a map.
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Also registered at this address
6 other companies use the same registered office as Sustain Energy Consulting Limited.
- B&G Civils LtdCivil engineering
- GFS Doncaster LimitedPlumbers and heating engineers
- Granville Homes LimitedBuilders
- Highwind Developments LimitedFinishing trades
- Idf Property Solutions LimitedProperty developers
- Specialist Glass Projects LimitedGlaziers
What happens if Sustain Energy Consulting Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 2029 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 11942624
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 April 2019 (7 years ago)
- Registered office
- 33 Thorne Road, Doncaster, DN1 2HD
- Nature of business
- Construction of utility projects for electricity and telecommunications (SIC 42220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 5 April 2026
- Previous names
- NH Engineering Europe Ltd (until 3 Aug 2024)
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Doncaster
Other active civil engineering contractors registered in Doncaster.
- Thermofuse Pipelines Limited1997
- Thomas Ben Limited2001
- TJ Railway Services Limited2017
- TM Traffic Limited2022
- Toms Electrical Ltd2026
- Ubique Consultancy Ltd2023
- UK Pipeline Supplies Ltd2016
- Vac-Ex Limited2008
All civil engineering contractors in Doncaster · All trades in Doncaster · Civil engineering across the UK
Frequently asked questions
When are Sustain Energy Consulting Limited's accounts due?
Sustain Energy Consulting Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Sustain Energy Consulting Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Sustain Energy Consulting Limited still trading?
Sustain Energy Consulting Limited is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Sustain Energy Consulting Limited do?
Sustain Energy Consulting Limited is registered under Construction of utility projects for electricity and telecommunications (SIC 42220).
How old is Sustain Energy Consulting Limited?
Sustain Energy Consulting Limited was incorporated on 12 April 2019, 7 years ago.
Who runs Sustain Energy Consulting Limited?
Sustain Energy Consulting Limited has 1 active director, the longest-serving appointed in Apr 2019. Their names and service addresses are on the Companies House register.
Who owns Sustain Energy Consulting Limited?
One person or company has significant control of Sustain Energy Consulting Limited: an individual (owns 75% or more of the shares).
What is the penalty if Sustain Energy Consulting Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Sustain Energy Consulting Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.